고속철도차량기술개발 표준 모니터링 절차에 대한 고찰 (A Study on Standard Monitoring Process in Development of High Speed Railway Vehicle)

박민흥(Park Min-Heung),김범진(Kim Beom-Jin),김철수(Kim Chul-Su),최덕호(Choi Deuck-Ho) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5

According to railway safety regulations for securing the railway vehicle’s quality and performance, it can be partly exempted that the performance tests and production inspections on the railway vehicles which are produced and assembled for the purpose of test and research. The reasons of this exemption are for ensuring maximum autonomy and for saving time considered the development period of railway vehicle. However, it was continuously demanded the necessity of supplementation on the confirmation about railway vehicle’s quality & performance. Therefore, we added "The monitoring step" which is for securing the quality and performance in high speed railway vehicle’s subsystem & compartment to supplement those tests & inspections in development. In this paper, based on a standard ABS(Activity Breakdown Structure) of railway vehicle and a WBS(Work Breakdown Structure) of the railway vehicle system, we investigate the necessity of monitoring in the High speed railway vehicle development. And by comparing and analyzing the essential requirements of international standard, IRIS(International Railway Industry Standard) & TSI(Technical Specification for Interoperability), we try to examine a standard monitoring procedure.

저상 및 고상 철도 승강장 겸용 승강문 스텝 개념설계

박민흥(Park, Min-Heung),김철수(Kim, Chul-Soo) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.9

일반 간선열차에서 주로 사용하는 저상승강장과 수도권 전동차에서 주로 사용하는 고상승강장을 동시에 안 전운행하기 위한 니즈기술로서, 저상/고상 승강장에 상관없이 승하차할 수 있는 철도차량 승강문 스텝장치가 필요하 다. 본 연구에서는 이를 대비하여 저상/고상 승강장 겸용 승강문 스탭의 기능 및 제작 요구사항을 검토하였다. 세밀히 검토한 결과, 합리적 설계안은 자체 언더프레임의 손상 및 철도승강장의 이격거리 변동성을 최소화 할 수 있는 텔레 스코픽 슬라이딩 스텝방식이라고 판단된다. 또한 다양한 요구조건을 고려하여 각 단계별 스텝 동작 과정 및 제어 흐름도를 제시하였다. In order to operate trains both mainline railroad platform and metropolitan subway line platform, it is necessary to develop the doorstep equipment of the rolling stock regardless of low(500mm, mainline) and high level platforms(1,135mm, metropolitan subway line) because of the requisite door safety system. In this study, two different types of platforms were examined. On closer examination, it seems that the conceptual design is suitable for telescopic sliding type doorstep equipment to minimize damage to the carbody underframe of railway vehicles and can also minimize the variation of the distance between the railway platform. Furthermore, the operation process and control flowchart of doorstep equipments by stages are proposed by various performance requirements.

도시철도 승강장 안전발판 시스템 신뢰도 분석에 관한 연구

박민흥(Park, Min-Heung),이정훈(Lee, Jung-Hun),곽희만(Kwak, Hee-Man),김민호(Kim, Min-Ho) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.6

본 연구에서는 승객들의 실족 사고를 방지하고 보행안전을 확보하기 위해 개발한 승강장 안전발판 시스템의 모듈별 부품들을 계층적으로 분류하여 고장률을 예측하였다. 예측된 고장률을 바탕으로 신뢰성 블록도와 고장수목분석을 이용하여 시스템별 평균 수명 및 고장률을 산출하였고 승강장 안전발판 시스템의 RAMS(신뢰성, 가용성, 유지보수성, 안전성) 분석을 위해 수행한 신뢰도 분석 결과를 제시하고자 한다. We developed the platform safety step system for the passenger to avoid misstep accident and secure the pedestrian safety. In this study, we classify platform safety step system into hierarchy system and predict the failure rate of each part and calculate the failure rate & MTBF(Mean Time Between Failure) of each module(sub-system) by means of RBD(Reliability Block Diagram) & FTA(Fault Tree Analysis). Finally, we will propose the reliability analysis results for RAMS analysis of platform safety step system.

승강장 안전발판 시스템의 내구성 평가

박민흥(Min Heung Park),곽희만(Hee Man Kwak),김민호(Min Ho Kim) 한국신뢰성학회 2016 신뢰성응용연구 Vol.16 No.2

Purpose: The purpose of this study is to evaluate durability of platform safety step system in railway. Method: We performed finite element analysis & durability analysis of platform safety step system with VPD (Virtual Product Development) techniques and examined the durability standard & qualification life through the rig test during no failure test time in reliability qualification test. We continued to test 1 million cycles in KRS (Korea Railway Standard) for system’s robust design performance. Result: FEM analysis results are 14.9MPa & 14.7MPa of pin-joint, pivot and durability analysis result is above 1 million cycles. we calculated theoretically no failure test time 855,000 cycles and through the 1 million cycles durability rig test in KRS standard we confirmed product quality. Conclusion: This platform safety step system was designed very safe in terms of a mechanical strength & durability.

가속수명시험에 의한 CMB접촉기의 수명평가에 관한 연구

박민흥(Park Min-Heung),김영훈(Kim Young-Hoon),김철수(Kim Chul-Su),최덕호(Choi Deuck-Ho) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월

A Life in machinery parts and system shows gradual progress through the growth of design technology and innovation of manufacturing methodology etc. In this recent tendency, an Accelerated Life Test(ALT) is used to estimate stability and reliability of machinery parts and system for short period. As ALT is performed by applying high stress compared with using condition in a short time, we can rapidly evaluate the life time and failure rate. In this paper we carry out the ALT for CMB Contactor constructing the online-real time monitoring system, as a result of test we analyze the CMB Contactor's failure mode and failure mechanism. Consequently we will examine the method of evaluation life time in CMB Contactor through a estimation for interesting value - relationship of life time and stress, B10 life time etc. by simulation.

저상 고상 승강장 겸용 승강시스템 기술개발에 관한 연구 : 개념설계 및 시작품의 진동시험 결과를 중심으로

박민흥(Min-Heung Park),이정훈(Jeong-Hun Lee),최덕호(Deuck-Ho Choi),김철수(Chul-Su Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10

In this study we review all matters for system application based on the international and the domestic standards. Considering the minimization of bottom frame damage ease of maintenance withstanding-environmental performance (condensation or rain) maintenance of airtightness customer convenience and safety issues in railway vehicle the conceptual design for doorstep equipment for both the low and the high level platforms is carried out. On the basis of conceptual design the prototype is manufactured. We perform the vibration test based on the international standard IEC-61373 for securement of the reliability and enhancement of design & production. Finally we would like to describe the test results.

저상 고상 승강장 겸용 승강시스템 기술개발에 관한 연구 : 시제품의 내구성시험 결과를 중심으로

박민흥(Min Heung Park),최덕호(Duck Ho Choi),김철수(Chul Su Kim) 한국철도학회 2012 한국철도학회 학술발표대회논문집 Vol.2012 No.5

국내 여객을 취급하는 철도역사의 승강장은 간선철도노선의 저상승강장(500mm)과 광역전철구간의 고상승강장(1135mm)으로 구분 운용되고 있다. 철도산업의 변화 및 발전에 대처하기 위하여 고상승강장으로의 표준화가 논의되고 있는 시점에서 저상전용 중·고속열차가 수도권 전철구간(고상승강장)과 본선구간(저상승강장)에서 혼용 운영될 경우를 대비하고 안전운전 및 승객편의를 함께 고려하기 위해 저상 고상 승강장 겸용 승강시스템의 개발은 필수적이다. 승강문의 경우 KS규격에 내구성 시험 기준이 명시되어 있으나, 본 연구에서 개발 중인 시스템(스텝)에 대한 내구성 시험 기준은 현재 존재하지 않는다. 이에 무고장 시험시간 및 보증시험 개념을 도입하고 신뢰성 척도를 결정하여 내구성 시험횟수를 이론적으로 산출하였고 이를 토대로 수행한 시험결과에 대하여 고찰하고자 한다. In this study, durability test of doorstep equipment for both the low and the high level platforms under development was carried out to increase the reliability of the system. Currently, durability test criteria of door system is stated as 300,000 times in Standard but that of the doorstep under development does not exist. Therefore with the concept of Zero Failure Test Time and Reliability Qualification Test, we determined the measure for reliability and calculated theoretically durability test time. we completely performed the durability test and reviewed the results.

CMB접촉기의 교환주기 결정에 관한 사례연구

박민흥(Park Min-Heung),신백철(Shin Baek-Chul),김철수(Kim Chul-Su),최덕호(Choi Deuck-Ho) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월

As a case study on determining the replacement interval for the CMB contactor, we analyzed a field failure data during 59 months and through the simulation reliability is analyzed. As a result of analyzing the reliability we estimated parameters and analyzed distribution characteristics. Ultimately using the estimated results and applying the Age Replacement Policy considered the cost information, CMB contactor's replacement interval is determined. Through the comparison, analysis between the replacement interval and manufacturing company's, the necessity of replacement interval that is reflected in our operation circumstances is examined.

철도산업에서 적용되는 품질 규격 및 철도시스템 평가에 대한 고찰

박민흥(Park Min-Heung),김범진(Kim Beom-Jin),이종찬(Lee Jong-Chan),최덕호(Choi Deuck-Ho) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7

In this paper, we investigate the development process of the quality assurance system ISO9001 in the railway industry and ISO/TS 16949 the quality system in the automotive industry. We study the international standard IRIS(International Railway Industry Standard) & TSI(Technical Specification for Interoperability) applied in railway industry. Throughout studying for the whole development process of the Rolling Stock Quality System, we are to review the necessity of the monitoring process and assesment process applied in IRIS & TSI guidelines. It will be the keystone enhancing our quality level to global level in railway industry.

도시철도 승강장 안전발판 시스템 개념설계

박민흥(Park, Min-Heung),곽희만(Kwak, Hee-Man),김민호(Kim, Min-Ho) 한국산학기술학회 2014 한국산학기술학회논문지 Vol.15 No.5

최근 수도권 전동차 구간에서 차량과 승강장사이의 공간에 장애우,어린이 등 교통약자의 발빠짐 등으로 인한 안전사 고가 빈번히 발생하고 있다.특히 곡선승강장에서는 차량과의 간격이 최대 260mm까지 존재하므로 교통약자를 포함한 승객 의 안전한 교통이동권 확보가 중요하며,승강장과 전동차 사이 공간에 대한 인터페이스를 위한 니즈기술로서,승강장 안전발 판이 필요하다.본 연구에서는 승강장 안전발판의 제작 및 기능 요구사항을 검토하여 고장으로 인한 차량과의 충돌 등 비상 상황에 대응할 수 있는 충돌 안전성과 운영자 친화적인 유지보수용이성을 고려한 개념설계를 실시하였다.또한 다양한 요구 조건을 고려하여 각 단계별 안전발판의 동작과정 및 제어 흐름도를 제시하였다. Recently, safety accident by misstep at the gap between the platform and railway vehicle have frequently occurred to the mobility handicapped including disabled person, children etc. in metropolitan subway region. Particularly, because the curved platform’s gap from platform to railway vehicle is max. 260mm it is important to securement of the passenger’s safe mobility right. So it is necessary to platform safety step equipment for needs technology to interface gap between the platform and railway vehicle. In this study we examined the function & production requirements of platform safety step and performed the conceptual design considering the crash safety and maintenance easiness. Moreover, considering various performance requirements we suggested step’s operation procedure & control flowchart.